Topography OD

Topography OS

OD – Base Curve 6.60, Power -5.00, Diameter 8.5, A-Value 10

OS – Base Curve 6.30, Power -8.00, Diameter 8.5, A-Value 15

Evaluation showed mild central pool with a thin band of fluorescein around edges OU. Less edge clearance was noted on OS versus OD.

Fluorescein pattern OD

Fluorescein pattern OS

Conclusions:  Base Curve fit is acceptable OU.

More edge lift is needed so higher A Values should be used.

Over-refraction was -.50 OD and -.75 OS.

Prescriptive lens specifications:

OD – Base Curve 6.60, Power -5.50, Diameter 8.5, A-Value 12

OS – Base Curve 6.30, Power -8.75, Diameter 8.5, A-Value 16